Plasma and Fusion Research
Volume 14, 2403007 (2019)
Regular Articles
- Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
Abstract
The high pressure limit of equilibrium in linear traps corresponds to the diamagnetic reduction of the confining field and the corresponding increase in the volume of flux tubes. In the gas-dynamic regime the axial losses from a flux tube are proportional to its cross-section in the mirror throat. Thus, the axial confinement time, which is proportional to the ratio of the flux-tube volume to its cross-section in the mirror throat, can grow significantly in the high-pressure limit. In this paper the numerical model of the axially symmetric equilibrium based on the coupled Grad-Shafranov and transport equations is presented. The results are in good agreement with the earlier analytical model [A.D. Beklemishev et al., Fusion Sci. Technol. 63(1T), 46 (2013)].
Keywords
linear trap, gas-dynamic trap, plasma transport, high-beta equilibrium, diamagnetic confinement
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References
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